Not Enough Space? Help

Hello Fella's. Hey I have a wii softmodded 4.3 IOS 249 re17 and using Wiiflow usb loader, and it was working great. Now all the sudden when I try to install a game it says "not enough space:2348810240 blocks needed, 1 available" I have plenty of space on the HDD so I don't know why this is happening. please help. Thanks